gcc wrapper in C - example error

PM gccwrap2:    "-O1"
PM gccwrap2:    "-fno-omit-frame-pointer"
PM gccwrap2:    "-fno-optimize-sibling-calls"
PM gccwrap2:    "-m64"
PM gccwrap2:    "-g"
PM gccwrap2:    "-fno-strict-aliasing"
PM gccwrap2:    "-std=gnu99"
PM gccwrap2:    "-Wall"
PM gccwrap2:    "-Wstrict-prototypes"
PM gccwrap2:    "-Wno-unused-value"
PM gccwrap2:    "-nostdinc"
PM gccwrap2:    "-fno-builtin"
PM gccwrap2:    "-fno-common"
PM gccwrap2:    "-Wredundant-decls"
PM gccwrap2:    "-iwithprefix"
PM gccwrap2:    "include"
PM gccwrap2:    "-Wno-pointer-arith"
PM gccwrap2:    "-pipe"
PM gccwrap2:    "-I/home/peter/projects/xen-unstable.hg/xen/include"
PM gccwrap2:    "-I/home/peter/projects/xen-unstable.hg/xen/include/asm-x86/mach-generic"
PM gccwrap2:    "-I/home/peter/projects/xen-unstable.hg/xen/include/asm-x86/mach-default"
PM gccwrap2:    "-msoft-float"
PM gccwrap2:    "-mno-red-zone"
PM gccwrap2:    "-fpic"
PM gccwrap2:    "-fno-asynchronous-unwind-tables"
PM gccwrap2:    "-g"
PM gccwrap2:    "-D__XEN__"
PM gccwrap2:    "-DVERBOSE"
PM gccwrap2:    "-fno-omit-frame-pointer"
PM gccwrap2:    "-DCONFIG_FRAME_POINTER"
PM gccwrap2:    "-MMD"
PM gccwrap2:    "-MF"
PM gccwrap2:    ".libelf-dominfo.o.d"
PM gccwrap2:    "-c"
PM gccwrap2:    "libelf-dominfo.c"
PM gccwrap2:    "-o"
PM gccwrap2:    "libelf-dominfo.o"
PM gccwrap2: final command:
    /usr/bin/gcc.real "-O1" "-fno-omit-frame-pointer" "-fno-optimize-sibling-calls" "-m64" "-g" "-fno-strict-aliasing" "-std=gnu99" "-Wall" "-Wstrict-prototypes" "-Wno-unused-value" "-nostdinc" "-fno-builtin" "-fno-common" "-Wredundant-decls" "-iwithprefix" "include" "-Wno-pointer-arith" "-pipe" "-I/home/peter/projects/xen-unstable.hg/xen/include" "-I/home/peter/projects/xen-unstable.hg/xen/include/asm-x86/mach-generic" "-I/home/peter/projects/xen-unstable.hg/xen/include/asm-x86/mach-default" "-msoft-float" "-mno-red-zone" "-fpic" "-fno-asynchronous-unwind-tables" "-g" "-D__XEN__" "-DVERBOSE" "-fno-omit-frame-pointer" "-DCONFIG_FRAME_POINTER" "-MMD" "-MF" ".libelf-dominfo.o.d" "-c" "libelf-dominfo.c" "-o" "libelf-dominfo.o"
ld   -melf_x86_64 -r -o libelf-temp.o libelf-tools.o libelf-loader.o libelf-dominfo.o
objcopy --rename-section .text=.init.text --rename-section .data=.init.data --rename-section .rodata=.init.rodata --rename-section .rodata.str1.1=.init.rodata.str1.1 --rename-section .rodata.str1.2=.init.rodata.str1.2 --rename-section .rodata.str1.4=.init.rodata.str1.4 --rename-section .rodata.str1.8=.init.rodata.str1.8 --rename-section .data.rel=.init.data.rel --rename-section .data.rel.local=.init.data.rel.local --rename-section .data.rel.ro=.init.data.rel.ro --rename-section .data.rel.ro.local=.init.data.rel.ro.local libelf-temp.o libelf.o
ld   -melf_x86_64 -r -o built_in.o libelf.o
make[5]: Leaving directory `/home/peter/projects/xen-unstable.hg/xen/common/libelf'
ld   -melf_x86_64 -r -o built_in.o bitmap.o cpu.o cpupool.o domctl.o domain.o event_channel.o grant_table.o kernel.o keyhandler.o kexec.o lib.o memory.o multicall.o notifier.o page_alloc.o preempt.o rangeset.o sched_credit.o sched_credit2.o sched_sedf.o sched_arinc653.o schedule.o shutdown.o softirq.o sort.o spinlock.o stop_machine.o string.o symbols.o sysctl.o tasklet.o time.o timer.o trace.o version.o vsprintf.o wait.o xmalloc_tlsf.o rcupdate.o tmem.o tmem_xen.o radix-tree.o rbtree.o lzo.o decompress.o bunzip2.o unlzma.o unlzo.o xenoprof.o compat/built_in.o hvm/built_in.o libelf/built_in.o
ld: cannot find version.o: No such file or directory
make[4]: *** [built_in.o] Error 1
make[4]: Leaving directory `/home/peter/projects/xen-unstable.hg/xen/common'
make[3]: *** [/home/peter/projects/xen-unstable.hg/xen/common/built_in.o] Error 2
make[3]: Leaving directory `/home/peter/projects/xen-unstable.hg/xen/arch/x86'
make[2]: *** [/home/peter/projects/xen-unstable.hg/xen/xen] Error 2
make[2]: Leaving directory `/home/peter/projects/xen-unstable.hg/xen'
make[1]: *** [install] Error 2
make[1]: Leaving directory `/home/peter/projects/xen-unstable.hg/xen'
make: *** [install-xen] Error 2
failure